:lang(es), lang="ES" (xml)

Ignore this test. (:lang with lang is not supported)
You can only get meaningful results for this test if :lang works with lang, since it checks a detail with regard to that support.

Test passes if you see green below.

Text

Assertion: [Exploratory test] A :lang value will match a lang attribute value regardless of case differences in a page served as XML.

Notes:You can only get meaningful results for this test if :lang works with lang, since it checks a detail with regard to that support. If :lang does not work with lang, the test should show a message "Ignore this test." You should ignore the instructions and test results that follow and mark the results as "not applicable".
Next test
HTML5

selectors-002a
Result summary & related tests